84
OF 100
VENDOR AUDIT
Panda Peptides
US peptide vendor (Xylo Research Systems LLC) with 47+ SKUs, direct Janoshik COA links on every product page, explicit 503A/503B disclaimer, free US shipping over $50.
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VENDOR MATCHUP · AUDITED
Panda Peptides vs Summit Biotech
Two audits, side by side. Composite, subscores, shipping, payment, coupons. Panda Peptides takes the higher composite this cycle.
Composite score
vs
55
OF 100
VENDOR AUDIT
Summit Biotech
Operator received an FDA warning letter on December 10, 2024 as "Summit Research Peptides," then rebranded to Summit Biotech without disclosing the prior identity on the new site. Login-walled catalog, code-name SKUs for the FDA-cited compounds, and the cheapest per-mg pricing in our seven-vendor index on Tirzepatide, Retatrutide, and Semaglutide. ~90% of COAs are real Janoshik public-database links.
Subscore breakdown
7 METRICSMETRIC
PANDA PEPTIDES
SUMMIT BIOTECH
Composite · weighted avg
84/100
vs
55/100
Purity / COA
90/100
vs
70/100
Shipping · domestic days
4.0d
vs
5.0d
Pricing
86/100
vs
95/100
Support
80/100
vs
40/100
Last tested
2026-05-20
vs
2026-05-09
Payment
card, crypto
vs
crypto, card
Catalog overlap
ONLY PANDA PEPTIDES
pt-141nad-plusglp-3glp-1sklow
BOTH
bpc-157tb-500ghk-cumots-ctesamorelin
ONLY SUMMIT BIOTECH
retatrutidetirzepatidesemaglutidecagrilintide